Update to ASM4.
Trivial invokedynamic dispatch.
Properly bind and guard indy call sites.
Conditionally use indy only on 1.7+.
Add a global class modification guard.
Reenable tracing visitor.
Update to ASM 4.1.
Temporarily vendor jsr292-mock to allow building on Java 6.
Merge pull request #175 from headius/master

Start invokedynamic support and move to ASM 4.1